Fourth Drive - Proving the Battery Pack

It was always on my radar that I had to test the battery packs beyond the 10AH mark before "trusting" the dashboard range estimation - why? My pack essentially consists of 384 cells arranges as 192 in series and 2 parallel. That means it's a 20AH pack. For the purposes of range estimation I assume a 16AH pack - 80% DOD (Depth of Discharge). If I have any "dud" cells then the packs will only be good for 10AH.
So this Sunday morning I set out to drive the pack to the 12AH mark.

Ready to go - it gets hubcaps and wheel trim when I get the new tyres.

Around and around the big block I went - about a 7 to 7.5km trip per loop - I did 40km starting at 10:30AM and finishing around 11:40AM. The "big block" is a drive I can do that is only ever about 2.5 minutes from home so if a battey alarm goes off I can safely get home without damaging the pack. A couple of times I got brave and went a few km right up to the next major intersection. I passsed guys cutting a slot in the road 5 times.

The result:

After arriving back home I reversed up the drive then opened the bonnet to check temperatures etc. Since I haven't mounted the Lenze LCD/keypad in the cabin yet, I have to use it directly on the controller under the bonnet to check motor temperature and controller heatsink temperature - silly me had turned the car off. I re-started it and to my surprise a battery alert started. There were two subpacks that were alerting - subpack #2 in the boot and subpack #10 UNDER the controller tray! Drat!

I haven't pulled either out yet but I'm hoping it's just dud cells and not an overall metering problem (where I think it's 12AH but it's actually 18 or 20AH).

Other issues:
1. I think I have a tailshaft wobble. It's noticable above 70km/h. That's an axle stand check (initially).
2. Laurel didn't like the driver seat upholstery crinkling. I have pulled the the driver seat out and have stripped back the upholstery to glue it down to the foam a lot more (I was a bit skummy with the glue).

The good? It's a real pleasure to drive. I am absolutely amazed that no-one notices the noise - none. This a 1965 Humber Vogue - it should be noisy! I went within a meter of folk waiting to cross the road several times - and I was the only car for a few tens of meters - and it was pretty quiet - people don't notice.

Another good part is the ventilation in the Vogue is way better than the Super Snipe - it's going to be a better summer car for me (no aircon in either - I haven't driven with aircon for years). The Vogue can direct a huge volume of air into the cabin from the behind-the-bonnet scoop (see first picture in this post).
I had also backed off regen braking to a maximum of about 9kw (15 Amps battery current) and it's probably easier to drive. I'd like a cabin regen-trim control I think.

I'll pull battery pack #2 out tonight and do some tests. That will dictate whether I remove the controller tray to get at pack #10. I've begun re-gluing the driver seat.